What is the value of k If 15 ,k - 1, - 1 are in arithmetic progression
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15,k-1,-1 are in an A.P.
THUS THE MIDDLE TERM WOULD BE THE MEAN OF THE OTHER TWO NUMBERS.
THUS, k-1 = (15-1)/2 =7.
THEREFORE, k = 7+1 = 8
THUS THE MIDDLE TERM WOULD BE THE MEAN OF THE OTHER TWO NUMBERS.
THUS, k-1 = (15-1)/2 =7.
THEREFORE, k = 7+1 = 8
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